<form role="form" name="form">
  <h2>Please Pay this invoice:</h2>

  <a cam-file-download="INVOICE_DOCUMENT">Download</a>

  <br />

  <button cam-error-code="invoice-error"
          cam-error-message="No amount specified">
    No Amount specified
  </button>

  <button cam-escalation-code="invoice-escalate">
    This invoice seems suspicious
  </button>

</form>
